"We give the tigers frozen meat in their pool, and for the elephants we brought in ten tons of mud clay which works like a face pack.

"The elephants put it on their backs to protect their skin.

"We also have fire hydrants to cool down the habitats and wet the animals down in the mornings before they go out.

"They love it, it's a novelty factor for the animals - it doesn't cause them any stress."

If animals don’t want to spend time outside in the sun, they have the option of keeping cool in their air-conditioned houses designed to create shade.

Said Creighton: "The big cats will submerge in the water, we give fish ice-blocks to the sea lions, and they try to break it down.

"It's all activity based and everyone has an option. The snow leopards have rocks in their habitats that provide cooler areas.

"The keepers check on the animals to make sure they're okay and have plenty of water and plenty of shade."

The animals all have different ways of keeping cool.

Did you know that giraffes have dark and light patches on their skin to keep their temperature constant? In cooler weather the dark patches attract the sun and hold in the heat. In hot weather, the large blood vessels around each dark patch release heat, keeping the animal cool pic.twitter.com/gmAwP7MTTb